Brake beam and method of making same



Dec. v15, 1925. Y 1,565,346

L. L. WHITNEY BRAKE BEAMl AND METHOD OF MAKING SAME "ym ummm Dec.15,1925. 1,565,346

l.. l.. WHITNEY BRAKE BEAM AND METHOD 0F MAKING SAME Filed Jan, 10. 1923s sheets-sheet 2 Dec. 15,1925. y 1,565,346

L. L. 'WHITNEY BRAKE BEAM AND METHOD OF MAKING SAME F'ledJan. l0. 1923 3Sheets-Sheet 5 Patentes Das. is, icas.,

F HAMMOND, INDIANA, AISSIGNOR TO AMERICAN STEEL LOBEN L. WHITNEY,

roommates,v or omesso, ILLINoIs,

PATENT OFFICE. y

A CORIORATION OFNEW JERSEY.

g YBrauns Bram: AND Martien or MAKING SAME..

Application led January 10, 1923. Serial 11o. 611,726.

To all whom t may comma* Be it known that I, LOREN .L. -WH1TNEY, acitizen ofl the United States residing at Hammond, in the county of Lakof Indiana,

have invented certain Anew and useful Improvements in Brake Beams and.l

Methods of Makin Sama-of which the following is a speci cation. Thisinvention relates to a method of makin same. v v f One object of, lieinvention is to provide a simple and-efficient method of making'a ltruss-type of brake beam. f

' Another object is to provide' a truss type by means of the arrangementand method.

I, disclosed on the accompanying sheets of drawings, in which- Figures1', 2 and 3 are, respectively, a rear` Aand compression members areupset, collar elevation, topplan view, and end elevation of a channelshaped blank for the-compres` sion member of the brakev beam;

Figures 4; 5 and 6, respectively, are simi-` lar views showing camberbent ltherein;

Figures 7 and 8 are top and side tions ofthe strut forming a part of thevsaid blank with the truss type of brake beam;

Figures. 9 and 10, are, respectively, a rear elevation and top planviewshowing the strut applied to the compression member;

. Figure 11 is an end view of the end of the compressionx'nen'iberbefore further treatment;

elevation and top plan view of the strut and compression member showingthe outer ends 'mem r Figures 15 andk 16 are, respectively, a top' planview and -an end view member blank; 1

- Fi re 17 is a top plan View of the tension ofthe tension mediate itsends;

Figures 18 andy 19 are, respectively, rear elevation and top e` andState brake beam completely embraced .by the. compression eleva.

Figures12 and 13 are, respectively, a-rear' after itis given its V shapeinter@ intermediate portion of the tension member applied to the strutand the\end portions seated within the expanded endportion's of thelchannel shaped compression member; f

l'Figure 2O isan end view of the end portions of the'tensionandcompression members showing the former seated in the latter; Figures 21and l22 are rear elevation and top plan views. respectively, of the samebrake'beam-parts after the expanded flanged portions of the compressionmember are wrapped around or embrace the ends of the tension member.; vFigure 23 is an `end view 'of the end portions of the tensionA and.compression members showing the end of the tension member member; v-Figures 24, 25 and 26 amon other things, show ends of the tensionl ancompression 'membersafter the irst forging operation.y

in which the end portions of said tension portions being formed on boththe tension andeompression members;

Figures 27', 28 and 29 are similar views after the second forgingoperation showing the ends of the tension and compression.

on more' perfectly formed and Figures 30, 31 .and 32 are similar views,i

respectively, after the third for ing operal tion 1n which the trunnionsfor rake heads' tension member Within the collars of the bers together.

tion will be apparent vfrom thefollcwing de'- it will be noted` that thecom-pression member 1anl views of Athe three", l main parts of the rakebeam showing the i l "i as f members `further upset and the'collarsthere# so' are completely formed and the -collars on the The variousnovel -features of th'e invenl vscription-and drawings' and willbeparticu larly pointed out in the appended claims.-

, Referring tofthe vfigures of the drawingsfl is lormedfrom the blank4() channel shaped section, having a web '41 andflanges 42. iThe blankis first provided vwith a c'amber as shown. at 43.

A strut, 44 having' abanded portion 45 is l then applied over Y -so thatthe latter is embraced bythe banded the compression member portion 45.Then the ends of the compression member are treated ina manner to formrounded` seat portions 46 for the tension member and also to expandlaterally the ends of the compression member `anges 42 to, form enlargedembracing por-tions 47, which, 'will be pointed out later, embrace theenr-7" othe tension member.

'tension member blank 48 is then pro! vided 'ond given. V shapeintermediate its ends, as shovvn'iin Fiffures 15, 16 and 17, the.tension member in thls instance being circular in section. 'lTheintermediate portion of the tension member 48 is then applied to thestrut and the ends e9 of the tension member seated within `the roundedseat portions 46 of the compression member, whereupon the expanded'portions 47 of the compression member are Wrapped around to completelyembrace the' ends of the tension member,as

' shownin Figures 21, 22 and 23.

' meet the various requirements for successful' commercial use, themethod being simple,

The ends of the tension and compression members are then heated andgiven 1their first forging operation, in which thel ends of the tensionand compression members are both upset, as shown in Figures 24, 25 and26, shoulders and 51 being started, as shown in said ligures. The endsof the tension and compression members are then given the second forgingtreatment in which they are urthenupset as shown in Figures 27, 28 and29. 'lln this connection it will be noted that the shoulders 50 and 51on tension and compression members, respectively, are substantiallycompletely formed, the shoulder 50 being withinthe shoulder 51.

Then the tension and compression members are given their third forgingoperation in which the ends of the tension and com# pression members are4further upset and additional collars 52 and 5,3 formed on tension andcompression members, respectively, the collar 52 lbeing located Withinthe collar 53. The cooperating collars 50, 51, 5 and 53 rigidly hold thetension and com pression members together. In this Way, also, the endsof the bra'ke beam are pro vided with trunnions for brake heads, saidtrunnions having an intermediate groove 54.- 'for the reception of alocking block to prevent accidental lateral movement of an associatedbrake head.

By means of this method, a. truss type of brake beam is provided whichis adapted to ellicientand practicable.

` It is my intention. to cover all modiications of the invention fallingWithin the spirit and scope of the following claims.

I claim:

1. The method of making a truss type of ,ends'around the tension member,ao moselle.

' brake head trunnions.

2. rlhe method o nir-tiring e type oi brake beam consisting lirst inrovidin channel shaped compression in then connecting the strut there o,t pending the. ends of blank, then applying the tension member o saidstrut and placing the ends sion member between the expanded then bendingsaid expanded eren the ends of said tension member, and then upsettingand forming shoulders the embrec ing portions oi said tension andcompression members to firmly connect same and term "5' brake headtrunnions.

3. rlhe method of securing together the ends or the tension andcompressie?. om ffof a truss type of brake beam consistir. expanding theend portions nl sion member, then folding seid e forging shoulders onthe ends or said sion and compression members to .irmlj/ con-- neet sameand form brak-e head trnnnions.

Il. The method securing together ends of the tension and compression mebers of a truss type or breite beam' consist g in folding one of seidmembers around the other` and then forging shoulders on the er 'of saidtension and compression members te firmly connect same and form braisetrunnions.

5. A brake beamincluding tension compression members connected outerends, shoulders being formed on i. tension and compression members coning to rmly holdy together said 6. A brake boem including t compressionmembers connected -outer ends, said .tension member he shoulderportions, and said compressi member also having shoulder portions Ibracing the shoulder portions on said 't lodi

